commit 0837f99d3367ecf200033bbddfa05d061ae9f483
author Victor Stinner <vstinner@python.org> Fri Jan 29 23:04:50 2021 +0100
committer GitHub <noreply@github.com> Fri Jan 29 23:04:50 2021 +0100
tree 5c0342bb70cedb71dc8b7f5e958752b03eeb6466
parent 62949f697fdefbf0c8bbba7a8354b9376afa35ba

bpo-42323: Fix math.nextafter() on AIX (GH-24381)

math_nextafter_impl() must return a Python object, not a C double.

Modules/mathmodule.c

diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index 8133d6b..d0df58c 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -3474,10 +3474,10 @@ math_nextafter_impl(PyObject *module, double x, double y)
         return PyFloat_FromDouble(y);
     }
     if (Py_IS_NAN(x)) {
-        return x;
+        return PyFloat_FromDouble(x);
     }
     if (Py_IS_NAN(y)) {
-        return y;
+        return PyFloat_FromDouble(y);
     }
 #endif
     return PyFloat_FromDouble(nextafter(x, y));